I can confirm I've the same (very annoying) bug. I don't have the file that Paul L. is talking about, but when I do "sudo service network-manager restart" it works (but it's dirty, even in the /etc/rc.local folder).
I don't know if it can be useful but here are some logs (I aslept and awoke my laptop) :
$ cat /var/log/syslog | grep -i network
Dec 23 17:13:36 tblinux NetworkManager[1003]: <info> sleep requested (sleeping: no enabled: yes)
Dec 23 17:13:36 tblinux NetworkManager[1003]: <info> sleeping or disabling...
Dec 23 17:13:36 tblinux NetworkManager[1003]: <info> (eth0): device state change: unavailable -> unmanaged (reason 'sleeping') [20 10 37]
Dec 23 17:13:36 tblinux NetworkManager[1003]: <info> (eth0): cleaning up...
Dec 23 17:13:36 tblinux NetworkManager[1003]: <info> (eth0): taking down device.
Dec 23 17:13:37 tblinux NetworkManager[1003]: <info> NetworkManager state is now ASLEEP
Dec 23 17:13:37 tblinux NetworkManager[1003]: <info> (wlan0): device state change: activated -> unmanaged (reason 'sleeping') [100 10 37]
Dec 23 17:13:37 tblinux NetworkManager[1003]: <info> (wlan0): deactivating device (reason 'sleeping') [37]
Dec 23 17:13:37 tblinux NetworkManager[1003]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 5018
Dec 23 17:13:37 tblinux NetworkManager[1003]: <warn> DNS: plugin dnsmasq update failed
Dec 23 17:13:37 tblinux NetworkManager[1003]: <info> Removing DNS information from /sbin/resolvconf
Dec 23 17:13:38 tblinux NetworkManager[1003]: <info> (wlan0): cleaning up...
Dec 23 17:13:38 tblinux NetworkManager[1003]: <info> (wlan0): taking down device.
Dec 23 17:13:38 tblinux NetworkManager[1003]: <info> (D0:C1:B1:5F:55:D9): device state change: disconnected -> unmanaged (reason 'sleeping') [30 10 37]
Dec 23 17:13:38 tblinux NetworkManager[1003]: <info> (D0:C1:B1:5F:55:D9): cleaning up...
Dec 23 17:13:38 tblinux NetworkManager[1003]: <info> (D0:C1:B1:5F:55:D9): taking down device.
Dec 23 17:13:45 tblinux NetworkManager[1003]: <info> BT device D0:C1:B1:5F:55:D9 removed
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> wake requested (sleeping: yes enabled: yes)
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> waking up and re-enabling...
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (eth0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (eth0): bringing up device.
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (eth0): preparing device.
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (eth0): deactivating device (reason 'managed') [2]
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> NetworkManager state is now CONNECTED_GLOBAL
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> Unmanaged Device found; state CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889)
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0): bringing up device.
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0): preparing device.
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0): deactivating device (reason 'managed') [2]
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> NetworkManager state is now DISCONNECTED
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0) supports 4 scan SSIDs
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0): supplicant interface state: starting -> ready
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant-available') [20 30 42]
Dec 23 17:13:46 tblinux NetworkManager[1003]: <warn> Trying to remove a non-existant call id.
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0): supplicant interface state: ready -> disconnected
Dec 23 17:13:46 tblinux NetworkManager[1003]: <info> (wlan0) supports 4 scan SSIDs
Dec 23 17:13:47 tblinux NetworkManager[1003]: <info> (wlan0): supplicant interface state: disconnected -> inactive
Dec 23 17:13:47 tblinux NetworkManager[1003]: <info> BT device tobias (D0:C1:B1:5F:55:D9) added (NAP)
Dec 23 17:13:47 tblinux NetworkManager[1003]: <info> (D0:C1:B1:5F:55:D9): new Bluetooth device (driver: 'bluez' ifindex: 0)
Dec 23 17:13:47 tblinux NetworkManager[1003]: <info> (D0:C1:B1:5F:55:D9): exported as /org/freedesktop/NetworkManager/Devices/5
Dec 23 17:13:47 tblinux NetworkManager[1003]: <info> (D0:C1:B1:5F:55:D9): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2]
Dec 23 17:13:47 tblinux NetworkManager[1003]: <info> (D0:C1:B1:5F:55:D9): deactivating device (reason 'managed') [2]
Dec 23 17:13:47 tblinux NetworkManager[1003]: <info> (D0:C1:B1:5F:55:D9): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
I can confirm I've the same (very annoying) bug. I don't have the file that Paul L. is talking about, but when I do "sudo service network-manager restart" it works (but it's dirty, even in the /etc/rc.local folder).
I don't know if it can be useful but here are some logs (I aslept and awoke my laptop) : 1003]: <info> sleep requested (sleeping: no enabled: yes) 1003]: <info> sleeping or disabling... 1003]: <info> (eth0): device state change: unavailable -> unmanaged (reason 'sleeping') [20 10 37] 1003]: <info> (eth0): cleaning up... 1003]: <info> (eth0): taking down device. 1003]: <info> NetworkManager state is now ASLEEP 1003]: <info> (wlan0): device state change: activated -> unmanaged (reason 'sleeping') [100 10 37] 1003]: <info> (wlan0): deactivating device (reason 'sleeping') [37] 1003]: <info> (wlan0): canceled DHCP transaction, DHCP client pid 5018 1003]: <warn> DNS: plugin dnsmasq update failed 1003]: <info> Removing DNS information from /sbin/resolvconf 1003]: <info> (wlan0): cleaning up... 1003]: <info> (wlan0): taking down device. 1003]: <info> (D0:C1: B1:5F:55: D9): device state change: disconnected -> unmanaged (reason 'sleeping') [30 10 37] 1003]: <info> (D0:C1: B1:5F:55: D9): cleaning up... 1003]: <info> (D0:C1: B1:5F:55: D9): taking down device. 1003]: <info> BT device D0:C1:B1:5F:55:D9 removed 1003]: <info> wake requested (sleeping: yes enabled: yes) 1003]: <info> waking up and re-enabling... 1003]: <info> (eth0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] 1003]: <info> (eth0): bringing up device. 1003]: <info> (eth0): preparing device. 1003]: <info> (eth0): deactivating device (reason 'managed') [2] 1003]: <info> Unmanaged Device found; state CONNECTED forced. (see http:// bugs.launchpad. net/bugs/ 191889) 1003]: <info> Unmanaged Device found; state CONNECTED forced. (see http:// bugs.launchpad. net/bugs/ 191889) 1003]: <info> NetworkManager state is now CONNECTED_GLOBAL 1003]: <info> Unmanaged Device found; state CONNECTED forced. (see http:// bugs.launchpad. net/bugs/ 191889) 1003]: <info> (wlan0): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] 1003]: <info> (wlan0): bringing up device. 1003]: <info> (wlan0): preparing device. 1003]: <info> (wlan0): deactivating device (reason 'managed') [2] 1003]: <info> NetworkManager state is now DISCONNECTED 1003]: <info> (wlan0) supports 4 scan SSIDs 1003]: <info> (wlan0): supplicant interface state: starting -> ready 1003]: <info> (wlan0): device state change: unavailable -> disconnected (reason 'supplicant- available' ) [20 30 42] 1003]: <warn> Trying to remove a non-existant call id. 1003]: <info> (wlan0): supplicant interface state: ready -> disconnected 1003]: <info> (wlan0) supports 4 scan SSIDs 1003]: <info> (wlan0): supplicant interface state: disconnected -> inactive 1003]: <info> BT device tobias (D0:C1:B1:5F:55:D9) added (NAP) 1003]: <info> (D0:C1: B1:5F:55: D9): new Bluetooth device (driver: 'bluez' ifindex: 0) 1003]: <info> (D0:C1: B1:5F:55: D9): exported as /org/freedeskto p/NetworkManage r/Devices/ 5 1003]: <info> (D0:C1: B1:5F:55: D9): device state change: unmanaged -> unavailable (reason 'managed') [10 20 2] 1003]: <info> (D0:C1: B1:5F:55: D9): deactivating device (reason 'managed') [2] 1003]: <info> (D0:C1: B1:5F:55: D9): device state change: unavailable -> disconnected (reason 'none') [20 30 0]
$ cat /var/log/syslog | grep -i network
Dec 23 17:13:36 tblinux NetworkManager[
Dec 23 17:13:36 tblinux NetworkManager[
Dec 23 17:13:36 tblinux NetworkManager[
Dec 23 17:13:36 tblinux NetworkManager[
Dec 23 17:13:36 tblinux NetworkManager[
Dec 23 17:13:37 tblinux NetworkManager[
Dec 23 17:13:37 tblinux NetworkManager[
Dec 23 17:13:37 tblinux NetworkManager[
Dec 23 17:13:37 tblinux NetworkManager[
Dec 23 17:13:37 tblinux NetworkManager[
Dec 23 17:13:37 tblinux NetworkManager[
Dec 23 17:13:38 tblinux NetworkManager[
Dec 23 17:13:38 tblinux NetworkManager[
Dec 23 17:13:38 tblinux NetworkManager[
Dec 23 17:13:38 tblinux NetworkManager[
Dec 23 17:13:38 tblinux NetworkManager[
Dec 23 17:13:45 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:46 tblinux NetworkManager[
Dec 23 17:13:47 tblinux NetworkManager[
Dec 23 17:13:47 tblinux NetworkManager[
Dec 23 17:13:47 tblinux NetworkManager[
Dec 23 17:13:47 tblinux NetworkManager[
Dec 23 17:13:47 tblinux NetworkManager[
Dec 23 17:13:47 tblinux NetworkManager[
Dec 23 17:13:47 tblinux NetworkManager[
If you want me to do some tests just ask.